AEM 2021 Lecture 31: Equivalent Forces, Systems 1-31-17
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Department
Aerospace Engineering and Mech
Course
AEM 2021
Professor
Hesla Todd
Semester
Spring

Description
Equivalent Forces, Systems 1-31-17 (On rigid body, same effect on body) Two single forces Systems Equipollent Couples (Broaden system concept) 2 equal and opposite forces on parallel LOAs mean couple has a plane containing the two F's Couple: zero resultant force means there is no net tendency to cause the body to translate, but nonzero resultant moment will have a tendency to cause rotation. Resultant moment Can be computed in two ways Where Fa,F.pb being equal and opposite is known M is ● Perpendicular to plane of couple ● M=Fd Facts ● M is independent of reference point "O" → same tendency to rotate about any point ● Two couples ar eequivalenti
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